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Experimental study on the performance of support damper system using metal yield and re centering material device

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Document pages: 15 pages

Abstract: In order to effectively reduce the damage of earthquake to structure, the support system with damping device with energy dissipation and damping function is widely used in practical engineering. However, these braced dampers have been regarded as consumables for easy replacement of damaged dampers after strong earthquakes, as they are usually designed to withstand concentrated forces and deformation to protect major structural members such as columns and beams. A new type of super elastic shape memory alloy (SMA) damper is proposed in this paper. The damper can partially restore its original structure to reduce the maintenance cost. In addition, traditional steel dampersed for improving the energy dissipation arising due to metallic yielding are additionally integrated into the bracing member. The behaviors of such bracing systems with the damper devices were reproduced in experimental tests with the cyclic loading history, and then their strength capacity and recentering capability were estimated based on the experiment results. Finally, additional experimental tests were performed by imposing cyclic loading histories with different loading speeds on the superelastic SMA and steel plate damper specimens.

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